Technologies For Relay User Equipment Reselection

1. One or more non-transitory, computer-readable media having instructions that, when executed, cause processing circuitry to: establish a connection with a target user equipment (UE) through a relay UE; detect a trigger to perform a relay UE reselection; select, as a predetermined threshold, whichever is greater of a first threshold based on a security policy of a source UE and a second threshold based on a security policy of the target UE; detect a candidate relay UE having a security capability that is equal to or greater than the predetermined threshold; generate a relay UE reselection request, the relay UE reselection request to include an identifier and the security capability of the candidate relay UE; and output the relay UE reselection request for transmission to the target UE to perform the relay UE reselection.

2. The one or more non-transitory, computer-readable media of claim 1, wherein the instructions, when executed, further cause the processing circuitry to: detect a plurality of candidate relay UEs having a corresponding plurality of security capabilities; select a subset of the plurality of candidate relay UEs that have security capabilities equal to or greater than the predetermined threshold; and generate the relay UE reselection request to include identifiers and security capabilities of the subset of the plurality of candidate relay UEs.

3. The one or more non-transitory, computer-readable media of claim 2, wherein the instructions, when executed, further cause the processing circuitry to: determine signal qualities associated with individual candidate relay UEs of the subset of the plurality of candidate relay UEs; and order a list of the identifiers within the relay UE reselection request based on the signal qualities associated with the individual candidate relay UEs.

4. The one or more non-transitory, computer-readable media of claim 1, wherein the processing circuitry is to detect the trigger based on receipt of a relay discovery message from the candidate relay UE and a signal quality associated with the candidate relay UE being greater than a signal quality associated with the relay UE.

5. A baseband processor comprising: processing circuitry to: detect a trigger to perform a relay user equipment (UE) reselection; select, as a predetermined threshold, whichever is greater of a first threshold based on a security policy of a source UE and a second threshold based on a security policy of a target UE with which the source UE is to be connected via a relay UE; detect a candidate relay UE having a security capability that is equal to or greater than the predetermined threshold; generate a relay UE reselection request, the relay UE reselection request to include an identifier of the candidate relay UE; and output the relay UE reselection request for transmission to the target UE to perform the relay UE reselection; and interface circuitry coupled with the processing circuitry to enable communication.

6. The baseband processor of claim 5, wherein the processing circuitry is further to: detect a plurality of candidate relay UEs having a corresponding plurality of security capabilities; select a subset of the plurality of candidate relay UEs that have security capabilities equal to or greater than the predetermined threshold; and generate the relay UE reselection request to include identifiers associated with the subset of the plurality of candidate relay UEs.

7. The baseband processor of claim 6, wherein the processing circuitry is further to: determine signal qualities associated with individual candidate relay UEs of the subset of the plurality of candidate relay UEs; and order a list of the identifiers within the relay UE reselection request based on the signal qualities associated with the individual candidate relay UEs.

8. The baseband processor of claim 7, wherein the processing circuitry is further to order the list based on security capabilities of the individual candidate relay UEs.

9. The baseband processor of claim 5, wherein the processing circuitry is to detect the trigger based on receipt of a relay discovery message from the candidate relay UE and a signal quality associated with the candidate relay UE being greater than a signal quality associated with the relay UE.

10. The baseband processor of claim 5, wherein the processing circuitry is further to generate the relay UE reselection request to include a security capability of the candidate relay UE.

11. A method comprising: establishing a connection with a target user equipment (UE) through a relay UE; detecting a trigger to perform a relay UE reselection; selecting, as a predetermined threshold, whichever is greater of a first threshold based on a security policy of a source UE and a second threshold based on a security policy of the target UE; detecting a candidate relay UE having a security capability that is equal to or greater than the predetermined threshold; generating a relay UE reselection request, the relay UE reselection request to include an identifier and the security capability of the candidate relay UE; and outputting the relay UE reselection request for transmission to the target UE to perform the relay UE reselection.

12. The method of claim 11, further comprising: detecting a plurality of candidate relay UEs having a corresponding plurality of security capabilities.

13. The method of claim 12, further comprising: selecting a subset of the plurality of candidate relay UEs that have security capabilities equal to or greater than the predetermined threshold.

14. The method of claim 13, further comprising: generating the relay UE reselection request to include identifiers and security capabilities of the subset of the plurality of candidate relay UEs.

15. The method of claim 14, further comprising: determining signal qualities associated with individual candidate relay UEs of the subset of the plurality of candidate relay UEs.

16. The method of claim 15, further comprising: ordering a list of the identifiers within the relay UE reselection request based on the signal qualities associated with the individual candidate relay UEs.

17. The method of claim 11, wherein detecting the trigger further comprises: detecting the trigger based on receipt of a relay discovery message from the candidate relay UE and a signal quality associated with the candidate relay UE being greater than a signal quality associated with the relay UE.